Almost all cremations done in the US are done at crematoriums where bodies are put inside an incinerator. The only open-air cremation service in the US is the non-profit Crestone End-Of-Life Project, which does a handful of open-air cremations every year in Crestone, Colorado.
But my question is, are there specific state laws that prohibit open-air funerals everywhere else in the country? Maybe environmental laws, fire safety laws, or body desecration laws?